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HANNA Instruments GroLine 水耕養液pH測試筆 HI98115
GroLine Hydroponics pH Tester with 0.01 Resolution - HI98115
HANNA Instruments 硫酸 0.01M, 1L HI70458
Sulfuric Acid 0.01M, 1L - HI70458
HANNA Instruments 鐵離子化學測試組(50劑測試) HI3834
Iron (Fe²⁺ & Fe³⁺) Chemical Test Kit - HI3834